Matt Ryan Matt Ryan is an author and cartographer and has been working in the TTRPG industry since the early 2000s. His recent poster maps for Chaosium Inc.’s Call of Cthulhu: Arkham supplement have received high praise, and he’ll bring them for Show and Tell. Matt is also an author of TTRPG scenarios, and this year he’ll be taking you on a wild ride into 1970s Call of Cthulhu!
